Wrench



L. BENOIT AND P. F. KING.

WRENCH.

APPLICATION FILED FEB. 15, I919.

1,347,49 1 Patented July 27, 1920.

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UNITED STATES.

PATENT OFFICE.-

LEON BENOIT AND PERCIVAL F ULKNER KING, or VANCOUVER, BRITISH COLUMBIA, CANADA.

WRENCH.

To all whom it may concern 7 l I Be it known'that we,-L1ioN BENOIT and PEROIVALFAULKNER KING, both subjectsof the King of Great Britain, and both residents of the city of Vancouver, in theProvince of British Columbia, Canada, have invented certain new and useful Improve- .ments in WVrenches,.of which the following is a specification.

Our invention relates to improvements in wrenches, and the objectof our invention is to devise a'wrench capableof being operated with onehand with great facility,

--which is possessed of great strength while being of light construction, and which is simple and cheap to manufacture. .We attain this object by the construct1on illustrated inthe accompanying drawingsin which-H v Figure l-is a side elevation of the wrench. :Fig. 2 is a fragmentary view showing the locking arrangement.

Fig. isa detail view of the lock member.

' size to enable the index finger to be inserted therein and the-aperture 5 being of such length to allow two or all the remaining fingersto be passed through it, and'in order to allow of the maximum grippingpressure to be exerted with ease and convenience the.

portion 3 is preferably bent over approximately on the line indicated by the numeral 6 and as shown in Fig. 4. Mounted on the forward edge of shank 1 for vertical movementthereon is a shank 7 the upper end of which forms the sliding jaw and the upper edge 8' of which is inclined, as shown'in Fig. 1, so that. the mouth of the'jaw space 9 is wider than the back. The inner end of the edge 8' is rounded as at 10 so that it may roll, as it were, on the edge of shank 1 when opening and the shank 7 is connected to shank l by straps Hand 12 the upper one of which fissubstantially U-shaped in for-- II1z1t1011,13l1B legs of the. straps being, rigidly Specification of Letters Patent.

' Application filed February 15, 1919 Serial No. 277,330.

secured to the shank 7. The upper strap 11 is so arrranged that the upper edge of the transverse portion 13 of the U bears, when the wrench is closed, on the rear edge of the shank 1, the point of contact being indicated in Fig. 1 by the letter A, its lower edge however being spaced from the edge of the shank 1, to permit suflicient play to open the wrench, and the point of contact A is in advance of the point of roll- 1ng contact between thetwo shanks 1 and 7, this latter point being indicated by the letter B. The lower strap 12 is formed of two plates connected by a bar 26 and is extended sufiiciently to allow of the mounting therebetween ofa locking member 14 capable of swinging. around a stationary square pin 15 to either a horizontal or vertical position, the length of the member 14 being such that when swung to a hori zontal position its inner end 16 will bear on the rear edge of the shank 1 and thus prevent disengagement of the locking teeth 17 and 18 with which the respective shanks 1 and 7 are provided, as shown in Fig. 1. The bar 26 forms a stop for-the member 14 when vertical. 2

The member 14 is recessed on one side, as at 19, and in-the recess is mounted a spring 20 divided at its ends as at 21 and 22, these ends being under tension and operative on the square sides of the pin 15 to maintain the member14 in either the horizontal or vertical positions when swung thereto. The lower end of the shank 7 is. provided with a wide portion 23 provided with an aperture 24through which the thumb may be inserted and in order that the most efficient grip may be provided for the thumb when in the act of operating the shank 7, the outer edge of the portion 23 is, turned upwardly, as indicated at 25 in Figs. 1 and 4. I

The'operation of the wrench will be apparent, as it will be seen that, referring to Fig. 1, on inserting the thumb in aperture 24,the index finger in aperture 4,'and the other fingers in aperture 5, the lower ends of the shanks 1 and 7 maybe spread apart,

to disengage the teeth 18 from teeth 17 so that the shank 7 may be slid up or down on shank 1 by the thumb to adjust the jaw space 9 to enable the wrench to be placed on the nut to be operated on, after which the Patented July 27,1920.

shanks may be brought together by the closing of the hand to rengage the teeth 17 and 18 so that the nut may be turned either to tighten or slack'en it.

The action of the wrench is substantially a scissor-like action, being opened by the spreading of the thumb and fingers and closed by the closing of the hand, so that I it issimple to operate and,"having minimum the'teeth of the same to lock it against re- 7 traction and having its upperend adapted to form the sliding jaw for thewrench, the lower ends of said shanks being formed as grippinghandles and provided respectively with thumb and finger apertures whereby the sh'anks may-be spread by the act of opening the hand and closed by the act of closing it.

having a rigidjaw at its upper end andits lower end provided with an aperture 'for --vide d with teeth adapted to cooperate with v cthefteeth of the same'tolock'it against rethe indexfinger and one for the two 'or all remaining fingers, a secondshank mounted on the edge of the first-mentioned one protraotion havingits upper end adapted to form the wrench sliding j aw and'its lower end providedwith a thumb aperture, and means for slidably connectmgthe second fmentio ned shank to the first-mentioned one.

g 3, Awrench comprising a toothed shank having a rigid aw at itsupper end and its lower end'formed as abroad portion offset from themain shank and provided with an aperture forthe index-finger and one for the two or all remaining fingers,;a second shank mounted on the edge of the first-mew tioned one provided with teeth adapted tocooperate with the teeth of the same to lock and its lower end broadened and provided in the broad portionwith a thumb aperture,

the outer edge of the broad portion being turned reversely to the offset portion aforesaid, and means for slidably connecting the second-mentioned shank to the first-mentioned. one. a

4;, A wrench comprising a shank having a rigid jaw, a second'shank mounted on the edge of the first-mentioned one having its upper end'adapted to form the sliding jaw for thewrench and rounded at one corner for rolling contact with said first shank, and an inclined strap secured to the second shank embracing the first one and bearing at its upper embracing edge on the rearedge of the first shank at a point advance 'oi the point of rolling contact of the second shank with the first one.

having a rigid jaw at its upper end and its lower end provided with an aperture for the index finger and one for the two or all remaining fingers, a second shank mounted on o. A wrench comprising a toothed shank the forward edge of the first-mentioned one 7 itslower endprovid'ed witha thumb aper-' ture, the upper end of said second 'shanl'rbe- 'ing rounded at one corner for rollingcom tact with the first-mentioned shank, anda strap secured to the second-mentionedshank adjacent its upper end embracing the firstmentioned one andbearingat its upper-em braclng edgeon the rearedge of the same at a point in a'dvan'ce of-the point of rolling f contact oflthesecond shankand the first one, Y its lower embracing edge being-spacedirom -2. A" wrench comprising a toothed shank the edge' of-the first-mentionedshanktoprovide a gap -therebet-ween.f

6. A wrench comprising a toothed shank having arigid-jaw atits upper endand its lower end provided with an aperture'for the' index finger and one-for the two or all remaining fingers, a second shankmounted on V the forward edge of the first-mentionedone provided with teeth adaptedito--co6per'ate with the teeth of thesame to lock it against ing contact with the first shank, and a strap secured tothe second-mentioned shank adj acent its upper end embracing the first-mentioned one and bearing at its 'upperiembraclIlg ,edgeon the rear edge of the same at a point in'advance otthe point of rolling con-- tact of the second shank and the first one,

itslower embracing edge being "spaced from the edge of the first-mentioned shank to pro-1 vide a gap therebetween, 'a'strap secured to the second shank intermediateitslength also embracingthe first one, and a supplemental lockingdevice mounted on'said strap adapt-f ed to lock said shanks against laterals'pread g movement; j c

t. A wrench comprisinga toothed shank having a rigidjaw at its upper end and its lower end provided with an aparture for the indexfinger and one for the two orallre maining fingers, a second'shank mounted on a the forward edge of the first-mentioned oneprovided with teeth. adapted to cooperate retraction, having. its upper end edge in with the teeth of the' sam'e: toi ilockit 'against, I

retraction having itsiipper and edge inc-V clined downwardly and outwardly and adapted to form the wrench sliding jaw and its lower end provided with a thumb aperture, the upper end of said second shank being rounded at one corner for rolling contact with the first-mentioned shank, a strap secured to the second-mentioned shank adjacent its upper end embracing the firstmentioned one and bearing at its upper embracing edge on the rear edge of the same at a point in advance of the point of rolling contact of the second shank and the first one, its lower embracing edge being spaced from the edge of the first-mentioned shank to provide a gap therebetween, a strap secured to the second shank intermediate its length also embracing the first one, and a pawl mounted on said strap normally clear of the rear edge of the first-mentioned shank adapted to be swung to bear against the same.

8. A wrench comprising a toothed shank having a rigid jaw at one end, a second shank mounted to slide on one edge of said first shank provided with teeth interlocking with said first-mentioned teeth to prevent relative sliding movement of the two shanks, a strap secured to the second-mentioned shank adjacent its upper end, embracing the first-mentioned one, a second strap secured to the second shank intermediate its length also embracing the first one, a pivot pin carried by said second strap, a lever mounted to swing on said pin provided with a cam face for engagement with said first shank to prevent spreading of the shanks, and having a recess in one side, a spring seated in said recess and engaging said pivot pin to normally hold the lever inoperative.

Dated at Vancouver, B. (1, this 16th day of January, 1919.

LEON BENOIT. PERCIVAL FAULKNER KING. 

